markjwyatt
Well-known
The uneven exposure looks like shutter trouble, that was shot a a fast shutter speed, right? Maybe a trip back to the repair person is in order if it was supposed to be all good. I don't generally use the 1000th speed on old cameras because it just spells trouble, but if it was supposed to be fixed...
The difference in graininess could well be down to the format difference. If you really want to know, scan a section of the 120 shot so you have the same reproduction ratio as 135. That doesn't mean there isn't more to be had in 135, it's just that your scanning method is not getting it out right now. I agree that a 100 ISO film should look a little better, but it's not so easy to get great scans. But judging from what other people post here, using a digital camera is the way to go. I'd try turning off all sharpening, input or not. Try different demosaicing algorithms perhaps. The method for downsizing for posting online could also have an effect.
When I got my Contax iia back from CLA, I ran a roll through and had a couple of shutter issues out of 36 shots. I took it back (fortunately he is within driving distance), and he made a quick tweak to the shutter. I have put several rolls through since with no issue. Ross said that after a CLA it could take some time for the lubrication to work through all mechanisms.
The tweak is pretty minor and easy. I would suggest getting on the phone with him.